Vegetation represented by green coloured areas Orchards represented by red circles
Concept 3 Concept 1
Concept 2
Omaru Creek flooding can be controlled with two wetlands and three detention ponds. The two wetlands are designed to widen the creek to slow the flow of the water. The wetlands are purposely placed in these spots; both wetlands are placed near the parts of the creek which are piped. According to Beca’s 1996 Catchment Management study, shown in the previous chapter, and the community consultation, areas where the creek is piped are the areas which mainly flood when there is heavy rainfall, so these areas are at high risk of flooding faster in future. Thus, slowing the flow of the water will lessen the risk of flooding in the long term, whether it’s from heavy rainfall runoff or climate change flooding in future. Widening and densifying the riparian areas – buffering them with more vegetation – will protect the banks from eroding and control the flooding. Along with buffering the creek’s banks, the overland flow areas are flood-prone areas which are critical to be buffered to provide extra protection from the risks of flooding.
For the proposed ponds on the Maybury Reserve, the detention volume required for the entire 38.2 ha was calculated with the 100 year ARI (Annual reoccurrence interval) which has a total runoff volume of 57,605.6 m3 (for calculation refer to Appendix A.2a). Using the calculation guidelines in TP10 and TP108, the total detention pond volume required for this 30% impervious area concept for the Maybury site in 100 years is 44,730.3 m3. The proposed concept includes two sets of developed areas;
the development on the north end is collectively smaller; therefore, one detention pond can tolerate the runoffs, whereas the development on the south of the site can have two ponds since it is larger and spread out. In total, three detention ponds, each with 14,910.07 m3 detention volume is required. (Calculation on Appendix A.3)
The Proposed Wetlands and Ponds
Development north of site
Development south of site
Developed Design
REFINING THE CHOSEN CONCEPT_Community Housing
The 30% imperious area concept suggests that to live safely and to keep our whenua safe, it is crucial to build away from flood-prone areas and water bodies (rivers, streams, creeks, and lakes). The building areas (impervious areas) are positioned along the outer edges of the site (along the existing road, Taniwha Street, on the north end, and Point England Road on the south end) and away from Omaru Creek and the overland flow paths. This proposed concept also eliminates the private and public boundaries of the Maybury neighbourhood and converts the site into a large, shared space.
This way the residents can live on the site and use the Maybury Reserve more often.
The following concepts are initial ideas that show how the building areas (in yellow) can be refined and placed more satisfactorily on the site. The concepts simplify and geometricise the
impervious areas (building areas) to see how they sit on the Maybury landscape.
Maybury Masterplan - building areas - informal shapes
These concepts test the attributes of the roughly placed building footprints and the impervious footprints.
However, the building footprints are too large to sit alongside the roads as they seem tall, boring and too ordinary. They will create boundaries between the existing community and the Maybury Reserve and block views of the Maybury Reserve and larger shadowed areas. The layout of the buildings will be much more appropriate if they are divided into smaller buildings with organic forms to allow them to blend into the natural landscape.
Maybury Masterplan Building Layout – Shape Experiment
Maybury Masterplan with more rounded building forms
Maybury Masterplan with more “squared” building forms
Developed Design _Housing
Case Study: Apartments on Ave. Maréchal Fayolle / SANAA
Finalising the building layout using a case study
The social housing apartments in the case study include four buildings, each four stories high. The largest building is 1083.54 m2 , the second largest is 951.59 m2, third largest is 922.95 m2, and the smallest is 330.60 m2
» Largest building - 1083.54 m2 = 8 apartments on a level
» 6x 3 bedroom, 1x 4 bedroom, and 1x studio
» 32 apartments in total
» 2nd largest building - 951.59 m2 = 7 apartments on a level
» 3x 4 bedroom, 1x 5 bedroom, and 2x 3 bedroom
» 28 apartments in total
» 3rd largest building - 922.95 m2 = 7 apartments on a level
» 3x 3 bedroom, 2x 4 bedroom, 1x 5 bedroom, and 1x studio
» 28 apartments in total
» Smallest building - 330.60 m2 = 3 apartments on a level
» 1x 4 bedroom, 1x 3 bedroom, and 1x studio
» 12 apartments in total
» At every 541.77 m2 approximately, there is one access.
Refined Final Concept
Environment Housing Layout
The final building layout is shaped more organically with smaller building footprints. This layout is influenced by the Social Housing Apartments designed on Ave. Maréchal Fayolle in Paris, France, by SANAA. To see if this concept meets Kainga Ora’s plan for 3000 homes, the standard apartment guidelines for New Zealand were used to figure how many apartments can be produced.
The case study was used as an example to roughly calculate how many apartments the Maybury building layout plan can accommodate; as a result, the plan can include approximately 2600 apartments, with each building five stories high. (See Appendix B for calculations).
To clarify, the final building layout concept is only a prototype to show one way of achieving more homes that can cater for the current community of Glen Innes and enable community growth in future. However, the plan indicates that more homes are achievable, but this means growing the neighbourhood vertically and not sprawling on the ground. The final plan allows for development in a safer way by prioritising the natural environment first.